GHSA-mcvp-rpgg-9273
LOWGHSA-mcvp-rpgg-9273 is a low-severity (CVSS 3.7) CWE-311 vulnerability in github.com/dragonflyoss/dragonfly. O3 Security confirms whether GHSA-mcvp-rpgg-9273 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
DragonFly's tiny file download uses hard coded HTTP protocol
Real-World Exposure
github.com/dragonflyoss/dragonfly🐹d7y.io/dragonfly/v2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Impact
The code in the scheduler for downloading a tiny file is hard coded to use the HTTP protocol, rather than HTTPS. This means that an attacker could perform a Man-in-the-Middle attack, changing the network request so that a different piece of data gets downloaded. Due to the use of weak integrity checks (TOB-DF2-15), this modification of the data may go unnoticed.
// DownloadTinyFile downloads tiny file from peer without range.
func (p *Peer) DownloadTinyFile() ([]byte, error) {
ctx, cancel := context.WithTimeout(context.Background(),
downloadTinyFileContextTimeout)
defer cancel()
// Download url:
http://${host}:${port}/download/${taskIndex}/${taskID}?peerId=${peerID}
targetURL := url.URL{
Scheme:
}
"http",
fmt.Sprintf("%s:%d", p.Host.IP, p.Host.DownloadPort),
fmt.Sprintf("download/%s/%s", p.Task.ID[:3], p.Task.ID),
Host:
Path:
RawQuery: fmt.Sprintf("peerId=%s", p.ID),
A network-level attacker who cannot join a peer-to-peer network performs a Man-in-the-Middle attack on peers. The adversary can do this because peers (partially) communicate over plaintext HTTP protocol. The attack chains this vulnerability with the one described in TOB-DF2-15 to replace correct files with malicious ones. Unconscious peers use the malicious files.
Patches
- Dragonfy v2.1.0 and above.
Workarounds
There are no effective workarounds, beyond upgrading.
References
A third party security audit was performed by Trail of Bits, you can see the full report.
If you have any questions or comments about this advisory, please email us at [email protected].
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/dragonflyoss/dragonfly | all versions | 2.1.0 |
| 🐹Go | d7y.io/dragonfly/v2 | all versions | 2.1.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/dragonflyoss/dragonfly. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update github.com/dragonflyoss/dragonfly to 2.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mcvp-rpgg-9273 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-mcvp-rpgg-9273 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-mcvp-rpgg-9273. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-mcvp-rpgg-9273 in your dependencies?
O3 detects GHSA-mcvp-rpgg-9273 across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.